Apparatus for forming oxids of nitrogen.



l. S. ISLAND. APPARATUS fon Pomme. oms or NITRQGEN.

APPLICATION FILED IDEO. 27 1911.

Patented Dc. 30, 1913 WTNESSESv:

is passed through an elextricv arc Haine to simple construction which JAMES SIMPSON ISLAND, 0F TORONTO, ONTARIO, CANALDA. APPARATUS FOR FORMING OXIDS OF NITROGEN.

Specification of Letters Patent.

Application filed December 27, 1911.

of, said casing having a lining 7 of silica, porcelain or other di-eleetrie material.

8 is a shaft Journaled in the bearings 9 i'atented Dec. 30, 1913. semi No. scenes.

To all whom it may concern e it known that I, JAMES tlieKing of Si MPsoNl I' Is- Great Britain, resident of the city of Toronto, county arranged ateach end of the casing 6. of York, Province of Ontario, in the Do- 10 is a driving pulley secured to one end minion ot' Canada, have invented certain of the shaft'S outside of said casing,

new and; useful Improvements in Apparaor Forming. (')xids of Nitrogen, which the following is a full, clear, and exact d eseri pti on.

` he invention relates to improvements in an apparatus for forming oxids of nitrogen, as described in the following'speeitica- 111s a rotor member rigidly secured to the shaft 8 andv suitably insulated therefrom and forming the negative electrode. rotor is formed of a hub 12 and radial arms 13 having segmental extensions 14 at their extremities, said arc shaped members beingl triangular shaped in cross section and tion and lillustrated in the accen'ipanying having their apexes 15 arranged outwardly drawings that, foi-in part 0f the same. y and in Central uliliemelit With the apex Of The invent-ion consists essentially in the the ring l, .The apexes of the triangular` novel construction and arrangement of' shaped electrodes thus present opposing parts, whereby a supply of Oxy-nitrogen gas points. A

1G is a binding post secured to the ring 'l and extending outwardly through the casing- 6 and suit-ably insulated therefrom and connected to the positive lead from a suitable electric lcuri-ent supply.

'IT is a binding post secured in one end ei the'easing t3 and connected to the negative lead :from the electriefcurrent supp and havingl a brush 18 on its inner end enei'l`ect the formation and fixation of the oxids of nitrogen.

The objects of the invention are, to reduce the cost of the production of oxids of iiitrogen for commercial purposes, to increase the efficiency andl durability of such apparatus, and to devise an apparatus of very may be operated with the minimum amount of attention.

ln the drawings, Figure 1 isa vertical cross sectional view through the electric arc forming portion of my device. Fig. 2 is a longitudinal vertical sectional view of the apparatus. i

huh i2 ot' the electrode 11.

a cooling chamber arranged within the easing (3 and having a plurality of tubes 4 21 extending between the heads 22 and 23,4

Like numerals of reference indicate coroxidized gases. responding parts iii each iigure. 2-1- are pipes connected to said coolin Referring to the drawings, l is a tubular ring shaped member preferably formed substantially triangular shaped in cross section and having the apex 2 forming the inner chamber through which a iuid is eiicuiated. The gases after passing through the cooling tubes are collected iii a chamber V2o and suitable coolingperipliery, said'ring forming the positive are carried oill through a suitable pipe 27. electrode. v The surfaces of the cooling cornpartmefirt' 3 are pipe openings arranged inthe outer exposed to the gases are suitably glazed to Hat side 4 of tie ring electrode l extendin prevent corrosion as the shaft 8 within the easing. ln the use of this device, to the tubular ring l Y suitable compressed air supply and the terminals of connected to a high potential electric current supply, theriiig forming the' positive 1 electrode. The rotor is opertedby any suitable form of motor connected to the puibe connected to able compressed air su y 5 are a plurality of minute radial holes through the apex 2 of the ring l 'arranged close together and extending completely therearoiind.

The ring l is rigidly supported within a cylindrical casing 6 close to one end there- 1 pipes leading PP Y- gaging a flange 19 forming part with the 80 said tubes forming cooling passages for the is also the portion of $5 are connected to .a

the two electrodes are electrically we locity through guiar shaped bodies.

of electric current to the the formation of an elecapexes of the trian- As the tendency of the electric current is to find the path of least. resistance the rotary movement of the segmental negative electrode causes the breaking of the electric are as the gaps between the scf-:ments change their position in relation to the inflow-'ing current in the positive electrode. The result is that an an'- nulus of electric flame is formed completely filling up the spacehet-ween the adjacent peripheries oli the two electrodes.' It is a well known fact that an electric flame consists of three Zones, the inner zone having an exceptionally high temperature and that the inner none emanates 'from the positive electrode. Tn this device. the Oxy-nitrogen gas to ho oxidixcd conveyed to the tubular positive electrode and is forced out through the minute holes the center zone of high temperature thus effecting the maximum oxidation of the nitrogen. lt is very important that the gases be withdrawn as quickly as possible from the influence oli' the middle and outer zones to avoid the dissociation of the nitric oxids formed in the inner zone 'and this result is accomplished to an exceptional degree in the. present device.

The in flowing gas is projected at high vetlie minute holes in thtl apex of the positive electrode and thus forced through the several Zones by the continuous flow and as the negative electrode is formed in segments, the oxidized gases will enter the spaces between the radial arms where they come in contact with the angular-ly arranged blade-like arms and are driven laterally into contact with the surfaces of the cooling chamber. The continuous inflow of gases of course, creates a pressure which causes the steady flow of the gases immediately after passing through the electric flame ley 10. The flow electrodes causes tric flame between the to pass into contact witlrthe cooling cham-l ber but the fan like action of the rotary electrode accelerates this movement.

Another very important feature in the arrangement', ola rotary electrode within an encircling electrode is that the which the arc flame 'ernanatcs is continuously 'changing and the arc-is continuously hrolten by the rotaryrmovement, thus obviating an crosive. effect on lthe points ot' the. electrode. The constant change of the palh or" the electric circuit, due to the rotary movement, produces a very remarkable result in that the` space between the two electrodes is filled with a sheet of .flame and as the air or other o.\ ynil;ro,=,;'en gas isiulrm'luced through'the hollow electrode. iunnfwliatcly info the. :zone of highest. temperature and around the coui- 'plete circle of flame and is withdrawn 5 in the apex directly intoV poi nt from' radial orifices,

quickly therefrom, the result is a very great increase in the oxids produced.

lVhat I claim as my invention is:

.1. In an apparatus for forming oxids of nitrogen, a hollow electrode formed in circle shape and havin;r openings therein adapted to project an annular' sheet of Oxy-nitrogen gas, and an electrode arranged in the plane of the projected gas and adapted t0 form an annulus of electric flame the central plane of which will be in the plane of the discharge of Oxy-nitrogen gas.

Q. In an apparatus for forming oxids of nitrogen: a hollow ring` shaped electrode having inwardly directed discharge openings in its median plane adapted to project an annular sheet of oXy-nitrogen gas, a rotary electrode arranged axially Within said ringr and adapted to create a. zone of electric flame in the plane of the discharge from said ring electrode.

3. In an apparatus for forming oxids of nitrogen, a tubular ring shaped electrode connected with a. suitable Oxy-nitrogen supply and formed substantially triangular in cross section and having the apex turned inward and formed with a plurality of minute and a rotary electrode supported in central alinement with said ring and having segmental members presenting an edge outwardly in alinement With the apex ot said ring and adapted to create a zone of electric flame in the plane ofl the discharge ot the Oxy-nitrogen gas.

Li. In an apparatus for forming oxids of' nitrogen, a tubular ring shaped electrode substantially triangular in cross section and having the apexturned inward and formed with a plurality of minute radial orifices in said apex, and gas inlet openings communi-- eating with a suitable supply of Oxy-nitrogenl gas. and a rotoi` electrode adapted to rotate'within said ring and having` a plurality of radial arms formed with segmental ends substantially triangular shaped in cross section.

rln an apparatus for forming oxids of nitrogen, a tubular ring shaped electrode substantially triangular in cross section and having the apex turned inward and formed with a plurality of minute radial orifices in said apex, a suitable supply of Oxy-nitrogen gas communicating with said tubular ring, and a. rotor electrode adapted to rotate within said ring and having a plurality of Hat radial arms set in langular relation to the avis of thc rotor and forming fan blades, said arms having segmental outer ends presenting an edge outwardly.

(L ln an apparatus for forming oxids of nitrogen, a casing, a hollow ring shaped electrodo arranged adjacent to one end of said casing and having inlet openings connected with a` compressed gas supply and having niinute discharge openings in its inner side, Signed at the city of Toronto, county of. i a shaft-journaled in said casing and extend- York, Ontario, Canada, this 20th day of ing through said ring, a rotary electrode se- December, 1911.

cured to said shaft and'having radial arms JAMES SIMPSON ISLAND. WithA arc shaped extremities, and a tubular Witnesses:

cooling chamber arranged Within said casing E. HERoN,

adjacent to said electrodes. .i B. TUCK. 

